Top 50 geomagnetic storms of 1999

On this page you will find an overview of the strongest geomagnetic storms of 1999 together with links to more information in our archive. Storms are ranked by the Disturbance storm-time index (Dst) that is designed to measure the magnetic signature of magnetospheric currents observed in the equatorial regions. The Dst index is provided by the World Data Center for geomagnetism in Kyoto.

		Dst	Ap	Kp max	Speed	IMF Bt	IMF Bz
1	1999/10/22	-237nT	91	8	711.4km/sec	37.09nT	-31.49nT
2	1999/09/22	-173nT	50	8	620.9km/sec	32.42nT	-22.64nT
3	1999/09/23	-155nT	28	6+	583.1km/sec	17.32nT	-14.26nT
4	1999/02/18	-123nT	80	7-	692.0km/sec	29.12nT	-25.55nT
5	1999/01/13	-112nT	40	7	444.4km/sec	19.44nT	-16.93nT
6	1999/11/13	-106nT	43	6+	499.6km/sec	16.24nT	-13.57nT
7	1999/02/19	-106nT	40	6-	596.5km/sec	9.25nT	-7.47nT
8	1999/01/14	-101nT	29	5+	579.7km/sec	17.56nT	-16.57nT
9	1999/03/01	-95nT	41	6-	565.0km/sec	23.26nT	-19.16nT
10	1999/04/17	-91nT	47	7+	438.4km/sec	24.83nT	-14.63nT
11	1999/02/28	-87nT	17	5+	413.4km/sec	16.91nT	-15.15nT
12	1999/11/14	-87nT	11	3	467.0km/sec	10.21nT	-8.88nT
13	1999/12/13	-85nT	26	6-	614.4km/sec	14.98nT	-11.27nT
14	1999/03/10	-81nT	34	6+	475.6km/sec	12.93nT	-12.29nT
15	1999/03/02	-80nT	22	6-	576.9km/sec	11.51nT	-11.10nT
16	1999/11/16	-79nT	14	4+	-	16.20nT	-13.07nT
17	1999/10/23	-76nT	32	5+	706.6km/sec	9.59nT	-7.58nT
18	1999/09/13	-74nT	46	6	656.0km/sec	11.08nT	-9.47nT
19	1999/11/08	-73nT	29	5-	654.0km/sec	10.51nT	-8.92nT
20	1999/10/24	-71nT	26	5-	638.4km/sec	8.68nT	-6.23nT
21	1999/09/16	-67nT	31	6	665.5km/sec	8.38nT	-7.57nT
22	1999/11/07	-67nT	31	5	599.9km/sec	19.09nT	-16.48nT
23	1999/10/10	-67nT	33	6-	673.2km/sec	17.84nT	-14.09nT
24	1999/10/15	-67nT	31	5	802.7km/sec	8.62nT	-7.71nT
25	1999/10/28	-66nT	21	5+	447.3km/sec	12.65nT	-10.92nT
26	1999/08/23	-66nT	31	6-	482.2km/sec	15.83nT	-11.50nT
27	1999/09/14	-65nT	21	5-	683.2km/sec	10.39nT	-8.03nT
28	1999/09/27	-64nT	43	6-	676.9km/sec	13.75nT	-11.09nT
29	1999/09/30	-61nT	26	5+	595.0km/sec	7.39nT	-6.92nT
30	1999/10/27	-61nT	19	5-	420.2km/sec	8.24nT	-7.33nT
31	1999/10/12	-60nT	46	5+	651.3km/sec	9.46nT	-7.78nT
32	1999/10/29	-59nT	9	3-	425.7km/sec	10.53nT	-7.68nT
33	1999/09/12	-59nT	31	6	631.1km/sec	15.70nT	-12.45nT
34	1999/02/20	-58nT	3	2+	511.2km/sec	6.84nT	-5.27nT
35	1999/03/07	-57nT	22	5-	512.6km/sec	9.10nT	-8.36nT
36	1999/10/13	-57nT	23	5-	654.7km/sec	8.82nT	-7.38nT
37	1999/11/09	-57nT	28	5-	675.5km/sec	8.46nT	-7.43nT
38	1999/01/15	-56nT	20	5-	618.5km/sec	9.97nT	-8.90nT
39	1999/03/29	-56nT	28	6-	560.2km/sec	15.53nT	-12.32nT
40	1999/08/22	-56nT	12	4+	474.5km/sec	9.83nT	-9.63nT
41	1999/08/20	-56nT	36	6-	708.6km/sec	7.70nT	-7.49nT
42	1999/11/11	-55nT	26	5-	724.8km/sec	8.52nT	-7.42nT
43	1999/08/24	-55nT	29	6-	574.2km/sec	13.66nT	-12.12nT
44	1999/10/17	-54nT	21	5-	621.3km/sec	6.06nT	-5.47nT
45	1999/07/31	-53nT	28	5+	663.2km/sec	10.76nT	-8.56nT
46	1999/10/25	-53nT	16	4-	630.4km/sec	5.85nT	-5.66nT
47	1999/10/11	-52nT	29	5	661.0km/sec	9.38nT	-8.13nT
48	1999/03/04	-52nT	30	5	596.2km/sec	12.08nT	-10.68nT
49	1999/01/23	-52nT	21	5	711.1km/sec	19.43nT	-8.22nT
50	1999/09/15	-51nT	27	6-	719.0km/sec	16.49nT	-13.70nT

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